859081 has 2 divisors, whose sum is σ = 859082. Its totient is φ = 859080.

The previous prime is 859057. The next prime is 859091. The reversal of 859081 is 180958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 774400 + 84681 = 880^2 + 291^2 .

It is a cyclic number.

It is not a de Polignac number, because 859081 - 2⁵ = 859049 is a prime.

It is a super-2 number, since 2×859081² = 1476040329122, which contains 22 as substring.

It is equal to p₆₈₂₇₈ and since 859081 and 68278 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (859031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429540 + 429541.

It is an arithmetic number, because the mean of its divisors is an integer number (429541).

2⁸⁵⁹⁰⁸¹ is an apocalyptic number.

It is an amenable number.

859081 is a deficient number, since it is larger than the sum of its proper divisors (1).

859081 is an equidigital number, since it uses as much as digits as its factorization.

859081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 859081 is about 926.8662255148. The cubic root of 859081 is about 95.0629684107.

The spelling of 859081 in words is "eight hundred fifty-nine thousand, eighty-one".